[4] Davis Lake was formed by a lava flow within the nearby volcanic field blocking Odell Creek.

In the summer, however, the inflow from Odell and Ranger creeks cannot fill up the lake as fast as the water escapes through the lava blockage, resulting in the lake covering a much smaller area.

The piscivorous trout, native to the lake, feeds on the invasive Tui chub.

In 1995, largemouth bass were illegally put into the lake, feeding off of the smaller trout.

There are three campgrounds on the shores of the lake—one each on the west and east sides, and one near the lava flow—which comprise 70 individual campsites.